Sanitary Sewerage System Design Standards

1.         INTRODUCTION AND GENERAL POLICIES

            1.1       Scope                                                                                  

            1.2       Interpretation                                                                         

            1.3       Applicable Codes and Policies                                     

            1.4       District Jurisdiction                                                                   

            1.5       Applicant’s Responsibility                                                        

            1.6       Variance                                                                                  

            1.7       Applicant’s Engineer’s Responsibility                           

            1.8       Referenced Specifications                                                        

            1.9       Occupancy/Sewer Service                                                       

2.         FLOW PROJECTION

            2.1       Definitions and Abbreviations                                       

            2.2       Wastewater Flow Rate units                                                    

            2.3       Flow Projections     

            2.4       Tributary Area                                                           

            2.5       Population Estimate                                                                 

            2.6       Land Use                                                                                

            2.7       Residential Flows                                                                     

            2.8       Commercial and Industrial flows                                               

            2.9       Major Point Source Discharge                                     

            2.10     Inflow/Infiltration                                                                      

3.         DESIGN CRITERIA

            3.1       Determination of Design Flow                                      

            3.2       Hydraulics                                                                               

            3.3       Minimum Diameter                                                                  

            3.4       Depth of Sanitary Sewer                                                          

            3.5       Acceptable Sanitary Sewer Pipes and Fittings              

            3.6       Location of Sanitary Sewer                                                      

            3.7       Over sizing and Extra Depth                                                     

            3.8       Slope of Lines                                                                         

            3.9       Velocity                                                                                   

            3.10     Horizontal and Vertical Separation                                           

            3.11     Structural Requirements                                                           

            3.12     Curves                                                                                    

            3.13     Manholes                                                                                

            3.14     Vertical Risers                                                                         

            3.15     Building Sewers                                                                       

            3.16     Force Mains and Lift Stations                                                  

            3.17     Inverted Siphons                                                                      

            3.18     Private (Residential) Sewer System                                          

            3.19     Abandonment                                                                          

4.         PLAN PREPARATION

            4.1       Sheet Size                                                                               

            4.2       Margins                                                                                  

            4.3       Signature Block                                                                       

            4.4       Cover Sheet                                                                            

            4.5       Plan of Sewer System                                                              

            4.6       Profile of Sewer System                                                        

            4.7       Underground Utilities                                                               

            4.8       Graphic Scale and North Arrow                                              

            4.9       Plan Check List                                                                       

            4.10     Dedication of Facilities to District                                             

            4.11     General Notes                                                                         

            4.12     Standard Drawings                                                                  

            APPENDIX

            A.        Commercial Wastewater Flow Parameters

            B.        Criteria for the Separation of Water Mains and Sanitary Sewers

            C.        Sanitary Sewer Construction Plan Check Sheet

            D.        General Notes

            E.         Standard Drawings

            F.         Standard Specifications